Nut-making machine.



W. L WARD.

NU MAKING MACHlNE.

APPLICATION FILED MAY6,1914.

1,179,480. 11111 111011 Apr. 1a, 1916.

2 SHEETS SHEEI WITNESSES: INVENTOR J t BY 2 ArrbR/vns W. L. WARD.

NUT MAKING MACHINE.

APPUCATION FILED MAY 6.1914.

1,179,480; lzltvntwd Apr. 18, 1916 2 SHEETS SHEET 2 g! IIVVENTOR V61/11, M

ATTORNEYS UNITED STATE% FEiTEEaTS filiffifiiilii.

WILLIAM L. WARD, 03? PORT CHESTER; NEW YORK, liSSIGNQR Ti; RUSSELL,EURDSMQLL & WARD BOLT AND NUT (30., 0F PORT CHESTER. NEW 36331,

NEW YORK.

NUT-MIAKING MACHINE.

To all whom it may concern:

Be it known that I, \ViLLiAM L. WARD, a citizen of the United States,residing at Port Chester. in the county of Westchester and State of NewYork, have invented certain new and useful Improvements in Nut- MakingMachines, of which the following is a full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to metal working machines, and with regard tocertain more specific features thereof to machines for the production ofnuts or nut blanks.

This invention has for one of its objects the provision of a practicalautomatic apparatus for the very rapid production of nut blanks.

It is another obiect of the invention to provide an apparatus of thecharacter de scribed which will effectively operate to transform a stockbar into perforated and crowned nut blanks.

Another object of the invention is to provide a simple mechanism wherebythe stock bar may be fed to certain operating means which transform thestock bar into nut blanks.

Another object of the invention is to minimize the amount of shock andstrain on a nut making n'iachine whereby the tendency to displace thestock bar or the blanks which are severed therefroul is obviated.

Still another object is to provide a. continuously operatingapparatus ofa simple character which may be operated by relatively unskilledworkmen. I

Other objects will be in part obvious, and in part pointed out hereinater.

The invention accordingly consists in the features of construction,combinations of elements and arrangement of parts which will beexemplified in the construction hero inafter set forth, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawings, wherein l is shown one of various possibleembodi ments of the invention, Figure l is a. plan view of an automaticmachine for producing crowned nut blanks from a stock bar; Fig. 2 isaplan view of the stock bar feeding mechanism shown in Fig. 1; Fig. 3 isan Specification. of Patent.

indented Apr. 18, ii'fii.

Serial 1%. 338,523.

clevational view, partly in section, of Fig. :2; and Fig. #2 is a.ectional view of the crowning die.

Referring now more particularly to the drawir the numeral 15 indicatesthe frame or bed of the machine, which provides bearings 2 for a maindriving shaft which is driven by a belt on the driving pulley 4. A bevelgear fixed on the main driving shaft 3 and meshes with a bevel pinion 5which fixed on one end of a. shaft 7. This sha 4 supg'iorteiil inbearings projecting from the rear of the frame 1, and carries on itsopposite end a bevel pinion 9 which mesh with a bevel gear 10 mounted ona cam slaft ll, the same cam shaft b ported in suitable bearings 12extending from the left end of the machine. The main driving shaft 8 isprovided with an ecren tric member is which issurronnded by a crank arm15 which connects pivotally with a rcciprocatory slide 16. the lastdescribed mechanism constituting a pitnian, and transformin the rotarymovement of the shaft 3 into a reciprozatorv movement of the slide l6.This slide carries two punches, a perforating punch 17 and a crowningshear punch 18. There is carried on the end of the driving .Jiaft 3, infixed relation therewith, a bevel pinion 19 which meshes with a bevelgear 20 fixed on one end of a shaft 21. which in turn is supported forre tacion in the bracket bearing extending forwardly from the frame 1.()n the opposite end of the shaft '31 there is secured a bevel pinion 23which meshes with a bevel gear 24 fixed on the lower end of a shortvertical shaft 25. Keyed to the shaft 25 above the bevel gear ll is aspur gear 26 mesning with a similar gear 27 which in turn is keyed orotherwise suitably secured on a shaft 28. The shaft 25 has a bearing ina projecting portion of the frame 1. The shaft 28 is supported in amovable bearing 50. The movable bearing 30 is provided with a chamber 31adapted to receive a portion of a compression spring 32, one end 33 ofwhich bears against the .the chamber and the other end of which bearsagainst a wall 34 formed on the pro' jecting portion 29of the frame 1.The spring 32 has a normal tendency to urge the bearing member 30 awayfrom the portion se a; i,

29 which tends to separate the shaft 28 from the shaft 25. Supported onthe'upper ends of these two shafts 25 and 28, respectively are tworotary feed members 35 and 36. One or both of these feed members may beprovided with peripheral projections 37 spaced at intervals around thecircumference of the rotary member or members. Both of the members 35and 36 are preferably mounted to rotate with the shafts or spindles 25and 28, respectively, as the same are driven through the medium of thedriving mechanism hereinbefore described. The bearing member 30, whichhas been described as movable, is supported within guideways 38 formedin brackets 39 secured to the frame 1 of the machine. I

Tie rods 40 are supported partially in the projecting portion 2-9 andpartially in the brackets 39. These tie rods are also supported by atransversely extending fixed abutment or member 41, and are encompassedby sleeves 42 which serve to position the member 41 some distance awayfrom the end of the movable supporting member 30. A cam mechanism 43 isinterposed between the member 41 and said end of the supporting member30, and is provided with a handle 44 whereby the said mechanism may bemanually operated to permit the spring 32 to urge the feed rollers 35and 36 apart in a manner which will be readily understood, so that themembers 37 will not cooperate to feed the bar, notwithstanding continuedrotation of the feed members 36. The stock bar is indicated in Fig. 1,at 45, in the form of a coil, and said coil is supported in any suitablemanner idjacent the feed end of the machine. A straightening device isindicated at 16, comprising rollers 47, providing a three point bearing,through which the bar 45 is urged for the purpose of straightening thesame before introducing it to the rollers. Die supporting means areindicated at 48, and comprise a crowning die 49 which cooperates withthe crowning punch 18 and a perforating die which cooperates with theperforating punch 17. A stop 49 limits the movement of the stockbar inthe direction of feed. A positioning finger 50 cooperates with otherparts of the machine to position the stock-bar opposite the dies, and aclamp plate 51 is adaptedto be actuated by a cam on the cam shaft 11through the intermediate niechanism comprising the headed r'r id 50' toclamp and maintain the'sto'ck bar in the correct position accorded it bymeans of' the positioning finger 50. A shear member 52 is firmly securedadjacent the crowning die, and is adapted to cooperate with an edge ofthe crowning punch to sever a nut blank from the stock bar 15. It wi-libe seen that the feed rollers 35 and 36 are adapted for con.- tinuousrotation, and that the peripherally contacting portions 37 travel in anendless path and operate at intervals to feed the stock-bar. Theperipheral length of the portions 37 or of one of said portionsdetermines the length of feed, and the stop 9 limits the movement of thestock-bar even against the action caused by the frictional engagement ofthe contacts 37 with said bar.

Guide members .33 and 5+ are securely connected to the frame adjacentthe point of feed of the bar and comprise housings having longitudinalapertures 56 through which the stock-bar passes. These guides serve toposition the bar properly with respect to the feed lugs on the rotaryfeed membersand also provide an additional bar straightening means. i

A plunger 57 is actuated by a cam 58to advance and meet the severed nutblank at substantially the point of severing, and the cam 58 is shapedwith an offset portion to permit a spring 59 to exert its influence onthe plunger 57 as the nut blank is severed from the bar so that the endof the plunger will be spring pressed against said nut blank and willcooperate with the punch to grip and carry the same into the crowningdie it. This die has lateral walls which closely fit the lateral wallsof the nut blank and prevent distortion of the same during the crowningoperation.

In the operation of this machine the end of the stock-bar may be ledthrough the straightening device 46 and the guide 53 and passed betweenthe feed rollers 35 and 36. it being understood that to facilitate thislatter operation the cam mechanism 43 is hand operated to permit thespring 32 to separate the ,rotary members 35 and 36. The/end m bestock-bar may then be led through gui e 54, the positioning device 50and beyond the chimp 51. As the end of the bar is led opposite therotary feed members. the cam mechanism 43 may be actuated to close themembers. Assuming the driving shaft 3 to be rotating at this time, theperipheral projections 37 cooperate to intermittently grip and feed thestoclebar until it eventually reaches the stop 49. Also, on rotation ofthe driving shaft 3 the reciprocatory slide 16 is actuated to carry thepunch members 17 and 18 toward the stock- 'bar, the perforating punch17, perforating the stock-bar to form a bolt opening and the crowningpunch or shear punch 18 simultaneously shearing a nut blank from thebarsand carrying the same into the crowning die for crowning. Thepositioning device has previously been operated to position the bar, andthe clamp is, of course. in clamping engagement during the operation ofthe punches. \Vhile the slide 16 is rei'ciprocating forwardly toperforate, sever and crown, the rota r v teed members are notcooperatively in contact with the stock-bar.

The length of the peripheral projections on the feed members isdetermined in order to prmide a feed of proper length. The in-- tervalsbetween the projections are also predetermined to permit retreat of theslide 16 and release of the clamp 51 and the positioning device beforethe rotary members 33 and 23 3 again cooperate to feed.

It will be seen from the foregoing that a rapidly operating feed isprovided, and also one which is continuously operated to inter mitientlyfeed the stock-bar without causing shock or strain on other parts of theoperating mechanism of the machine. The apparatus accomplishes, amongothers. all of the objects and advantages hereinbet'ore set forth.

As many changes above construction widely different embodiments of thisinvention could be made without departing from the scope thereof. it isinteii=.led that all matter contained in the above description or shownin the accompanying drawings shall be interpreted as illustrative andnot in a limiting sense.

Having described my invention, What I claim as new and desire to secureby Letters Patent is 1. In an apparatus of the character described, incombination, bar severing mech* anism adapted to operate at intervals,bar feeding mechanism comprising means continuously traveling in anendless path adapted to alternately grip and release sai bar and advancesuccessive portions thereof to the severing mechanism, and meanscomprising a manually operable mechanism adapted to render said meansineficctive to grip the bar during operation of the machine.

In an apparatus oi the c aracter described, in combination. bar wringmechanism adapted to operate at intervals. oar feeding mechanismcomprising a pair of iced rollers, one movable toward the other, haw ina series of coiiperating devices adapted to alternately grip and releasesaid bar and advance successive portions thereof to the severingmechanism, means adapted to con tinuously rotate said feed rollers, andmeans comprising a manually operable mechanism adapted to urge the feedrollers apart during operation of the machine. 3. In an apparatus of thescribed, in combination, bar severing mechanism adapted to operate atintervals, bar feeding mechanism comprising a pair of feed rollers, onemovable toward the other. having a series of cotiperating devicesadapted to alternately grip and release said bar and advance successiveportions thereof to thescvering mechanism. means adapted to continuouslyrotate said g tending to urge said could be made in the and manyapparentlycharacter defecd rollers, a spri rollers apart, and a manuallyoperable device adapted in one position to permit relative separatingmovement between said rollers under the influence of said spring and inanother position to retain said devices in bar gripping relation duringoperation of the machine.

a. In an apparatus of the character described, in combination, a fixedbearing, a bearing movable toward and from said fixe bearing, rotatableshafts supported by said bearings, a plurality of bar gripper membersrotatable with each of said shafts, the members on one shaft adapted tocooperate with those of the other to alternately grip and release thebar, a spring tending to urge said bearings apart, an abutment, and. amanually operable cam disposed between said abutment and said movablebearing adapted in one position to permit movement of the latter underthe influence of said spring 3. In an apparatus of the characterdescribed, in combination, a fixed bearing, a bearing movable toward andfrom said fiXe bearing, rotatable shafts supported by said bearings, aplurality of bar gripper members rotatable with each of said shafts, themembers on one shaft adapted to cooperate with those of the other toalternately grip and release the bar, aspring tending to urge saidbearings apart, an abutment, a tension rod, and a manually operated camrotatably mounted on said rod and disposed between said abutment andsaid movable bearing adapted in one position to permit movement of thelatter under the influence of said spring. 7

6. In an apparatus of scribed, in combination, crowning face, ate toalternatel the character dea die comprising a devices adapted tocoopercrip and release a bar 0 ran; so a mrt' ons then ,2 pp-.1. in msadapted to more said uously during" the a reciproeatory punch operablein ine wit said face and disposed sons to sever a blank from said barand press the severed blank against said face on its movement towardsaid face, and a plunger operative in sai die transversely of said face,the front end of said plunger being adapted to yieldingly cooperate withthe end of said punch to carry a severed blank into said die.

T. In an apparatus of the character described, in combi nation. a dic s,main driving shaft. a cam shaft, a severing -punch and mm:

u id 1 devices continopcration of the machine,

adapted to reciprocate toward and from said,

and

ill)

uously during the operation of the machine, a. plunger operative throughthe opening in said (lie and adapted to coiiperate with said punch tosupport a severed blank, a cam on said cam shaft, and -de"icesintermediate said dim and said plunger adapted to operate the latter. v

1n LBSDIIIIOIIy whereof I afiix my signature, in the presence of two\VH'HGSSBS.

WILLIA M L. WARD.

lVitnesses ELLwem) BURDSALL, HOWARD E. MARSHALL.

